Linq NH - Combining two expressions

[Roberto]

Good morning, with NH 3.1

i'm trying to combine 2 linq expression (  p=>p.Name=="foo"      or   p=>p.Name=="bar")

both Expression<Func<Person,bool>>

I found some implementation of the "combine" function, but if I use Expression.Or for the combining method it give me

Unable to cast object of type 'NHibernate.Hql.Ast.HqlBitwiseOr' to type 'NHibernate.Hql.Ast.HqlBooleanExpression'.

if indeed I use Expression.OrElse, it give me only the second filter, not the or

[Roberto]

found the problem. of course i had to imagine it.

the value of the parameters must be putted on an internal scope variable, or the late execution of linq will take only the last value